Quick answer
Hero Level Swap exchanges hero EXP levels, not the hero's entire investment package.
It does not function as a star-rank, skill-level, gear, Exclusive Weapon, or Wall of Honor swap.
Timing
Use the following as an example unlock window; the live event timer is authoritative:
- Opens Week 2 Day 1 / Season Day 8.
- Remains available through the active season.
Hero Swap Vouchers
Thresholds and coupon availability can differ between versions. Follow the rewards shown on your account.
Best uses
Level Swap is strongest when:
- a newly acquired hero needs to become combat-ready immediately;
- EXP was invested into a hero the player no longer uses;
- a player wants to move a high level from an obsolete hero into a permanent main-lineup hero.
Important trap
If a hero is swapped down below a level required by one of its unlocked skills, that skill can become temporarily unavailable until the hero is leveled back up.
Before using a coupon
Check these questions:
- Which hero is giving up levels?
- Which hero is receiving them?
- Is the receiving hero permanent/main-lineup?
- Will the donor lose access to any level-gated skill?
- Is the player likely to replace either hero soon?
Then output: Swap now / Save coupon / Low-value swap.